Blexten last longer than reactine when it comes to effectiveness but it does give some bad side effects to people taking it orally. Some of the side effects includes feeling of vomiting, drowsiness, headache, dizziness, loss of appetite, diminished hearing, and upset stomach with pain at times. Reactine has lesser side effects compared to Blexten but reactine causes the user to feel sleepy and drowsy. Although as mentioned in Blexten's labeling, it says non drowsy, it does cause people to feel drowsy and sleepy. Everyone's reaction to the medication is not the same.
Remember to first only buy and test a few tablets so that if you start to experience the above mentioned symptoms and side effects, you can discontinue the use of Blexten and inform your physician about it. This way, if your physician advise you to discontinue the use of Blexten, then those Blexten tablet you bought won't go to waste, since you can't take them anymore, due to the side effects problem.